The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/posix4.h

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    1 #ifndef _P1003_1B_P1003_1B_H_
    2 #define _P1003_1B_P1003_1B_H_
    3 /*-
    4  * Copyright (c) 1996, 1997, 1998
    5  *      HD Associates, Inc.  All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. All advertising materials mentioning features or use of this software
   16  *    must display the following acknowledgement:
   17  *      This product includes software developed by HD Associates, Inc
   18  * 4. Neither the name of the author nor the names of any co-contributors
   19  *    may be used to endorse or promote products derived from this software
   20  *    without specific prior written permission.
   21  *
   22  * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND
   23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   25  * ARE DISCLAIMED.  IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE
   26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32  * SUCH DAMAGE.
   33  *
   34  * $FreeBSD: src/sys/posix4/posix4.h,v 1.6 1999/12/27 10:22:09 bde Exp $
   35  * $DragonFly: src/sys/sys/posix4.h,v 1.8 2007/06/26 19:31:10 dillon Exp $
   36  */
   37 
   38 #include "opt_posix.h"
   39 
   40 #include <sys/param.h>
   41 #include <sys/malloc.h>
   42 #include <sys/sched.h>
   43 
   44 MALLOC_DECLARE(M_P31B);
   45 
   46 #define p31b_malloc(SIZE) kmalloc((SIZE), M_P31B, M_WAITOK)
   47 #define p31b_free(P) kfree((P), M_P31B)
   48 
   49 struct proc;
   50 struct lwp;
   51 
   52 void p31b_setcfg (int, int);
   53 
   54 #ifdef _KPOSIX_PRIORITY_SCHEDULING
   55 
   56 /* 
   57  * KSCHED_OP_RW is a vector of read/write flags for each entry indexed
   58  * by the enum ksched_op.
   59  *
   60  * 1 means you need write access, 0 means read is sufficient.
   61  */
   62 
   63 enum ksched_op {
   64 
   65 #define KSCHED_OP_RW { 1, 0, 1, 0, 0, 0, 0, 0 }
   66 
   67         SCHED_SETPARAM,
   68         SCHED_GETPARAM,
   69         SCHED_SETSCHEDULER,
   70         SCHED_GETSCHEDULER,
   71         SCHED_YIELD,
   72         SCHED_GET_PRIORITY_MAX,
   73         SCHED_GET_PRIORITY_MIN,
   74         SCHED_RR_GET_INTERVAL,
   75         SCHED_OP_MAX
   76 };
   77 
   78 struct ksched;
   79 
   80 int ksched_attach(struct ksched **);
   81 int ksched_detach(struct ksched *);
   82 
   83 int ksched_setparam(register_t *, struct ksched *,
   84         struct lwp *, const struct sched_param *);
   85 int ksched_getparam(register_t *, struct ksched *,
   86         struct lwp *, struct sched_param *);
   87 
   88 int ksched_setscheduler(register_t *, struct ksched *,
   89         struct lwp *, int, const struct sched_param *);
   90 int ksched_getscheduler(register_t *, struct ksched *, struct lwp *);
   91 
   92 int ksched_yield(register_t *, struct ksched *);
   93 
   94 int ksched_get_priority_max(register_t *, struct ksched *, int);
   95 int ksched_get_priority_min(register_t *, struct ksched *, int);
   96 
   97 int ksched_rr_get_interval(register_t *, struct ksched *,
   98         struct lwp *, struct timespec *);
   99 
  100 #endif /* _KPOSIX_PRIORITY_SCHEDULING */
  101 
  102 #endif /* _P1003_1B_P1003_1B_H_ */

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